package com.atguigu.gulimall.order.feign;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                // 拿到原始request
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if(attributes != null){
                    HttpServletRequest request = attributes.getRequest();

                    // 同步请求头数据
                    String cookie = request.getHeader("Cookie");
                    requestTemplate.header("Cookie", cookie);
                    System.out.println("feign远程调用之前先进行RequestInterceptor.apply");
                }

            }
        };
    }
}
